we don't know whether they're trying to complain about abortion, about taxes, this did happen on tax day in boston, the place of the tea party. or are they trying to protest foreign wars or something. that statement has been completely lost. >> well, clint, that goes to your point about motive. we know that generally, terrorism is often defined in three ways. acts or threats of violence. intended to communicate fear to a wider audience than only the victims affected. then to motive, a religious or political i am a by the perpetrator. we know that the president and fbi investigators are at this as a terrorist incident. from your experience, when the fbi is actually looking at the profiles, can they at this juncture know for a fact that there is a political or economic or religious motive here? cunning that at this stage? >> i don't think we know it at this stage. we know the device. initially we were told it was a small ied, perhaps like a pipe bomb. which you can get that out of an anarchist's cook book. now we're told it was a pressure cooker filled with explosives. that takes us ba